Home / 7,929.64-10,942.92-4,392.78

Finding the Fourth Proportional to 7,929.64, 10,942.92 and 4,392.78

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Solution

The fourth proportional to 7,929.64, 10,942.92 and 4,392.78 is: 6,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.64 : 10,942.92 = 4,392.78 : x
  2. Step 2: Convert to fraction form
    7,929.64/10,942.92 = 4,392.78/x
  3. Step 3: Cross multiply
    7,929.64x = 10,942.92 × 4,392.78
  4. Step 4: Simplify right side
    7,929.64x = 48,069,840.12
  5. Step 5: Solve for x
    x = 48,069,840.12/7,929.64
  6. Step 6: Final answer
    x = 6,062.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.